Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 위정재 | - |
dc.date.accessioned | 2022-10-07T04:24:50Z | - |
dc.date.available | 2022-10-07T04:24:50Z | - |
dc.date.issued | 2020-03 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v. 12, no. 14, page. 17113-17120 | en_US |
dc.identifier.issn | 1944-8244; 1944-8252 | en_US |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsami.0c01511 | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175126 | - |
dc.description.abstract | Micro- and nanotextured surfaces with reconfigurable textures can enable advancements in the control of wetting and heat transfer, directed assembly of complex materials, and reconfigurable optics, among many applications. However, reliable and programmable directional shape in large scale is significant for prescribed applications. Herein, we demonstrate the self-directed fabrication and actuation of large-area elastomer micropillar arrays, using magnetic fields to both program a shape-directed actuation response and rapidly and reversibly actuate the arrays. Specifically, alignment of magnetic microparticles during casting of micropost arrays with hemicylindrical shapes imparts a deterministic anisotropy that can be exploited to achieve the prescribed, large-deformation bending or twisting of the pillars. The actuation coincides with the finite element method, and we demonstrate reversible, noncontact magnetic actuation of arrays of tens of thousands of pillars over hundreds of cycles, with the bending and twisting angles of up to 72 and 61°, respectively. Moreover, we demonstrate the use of the surfaces to control anisotropic liquid spreading and show that the capillary self-assembly of actuated micropost arrays enables highly complex architectures to be fabricated. The present technique could be scaled to indefinite areas using cost-effective materials and casting techniques, and the principle of shape-directed pillar actuation can be applied to other active material systems. | en_US |
dc.description.sponsorship | The INHA university portion of this work was supported by the AOARD grant FA2386-18-1-4103 funded by the U.S. government (AFOSR/AOARD) and NRF (NRF2019R1A2C1004559). The AFRL portion of this work was supported by the AOARD grant FA2386-18-1-4104 funded by the U.S. government (AFOSR/AOARD). A.J.H. acknowledges support from the MIT-Skoltech Next Generation Program. A portion of this work was performed at LLNL under the auspices of the US Department of Energy under contract DE- AC52-07NA27344. J.J.W. thanks Prof. J. E. Ryu at North Carolina State University for providing the Si mold. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | actuation; micropillar; magnetic; wetting; self-assembly | en_US |
dc.title | Shape-Programmed Fabrication and Actuation of Magnetically Active Micropost Arrays | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acsami.0c01511 | en_US |
dc.relation.journal | ACS APPLIED MATERIALS & INTERFACES | - |
dc.contributor.googleauthor | Jeon, Jisoo | - |
dc.contributor.googleauthor | Park, Jeong Eun | - |
dc.contributor.googleauthor | Park, Sei Jin | - |
dc.contributor.googleauthor | Won, Sukyoung | - |
dc.contributor.googleauthor | Zhao, Hangbo | - |
dc.contributor.googleauthor | Kim, Sanha | - |
dc.contributor.googleauthor | Shim, Bong Sup | - |
dc.contributor.googleauthor | Urbas, Augustine | - |
dc.contributor.googleauthor | Hart, A. John | - |
dc.contributor.googleauthor | Wie, Jeong Jae | - |
dc.relation.code | 2020051325 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ORGANIC AND NANO ENGINEERING | - |
dc.identifier.pid | jjwie | - |
dc.identifier.researcherID | I-9878-2019 | - |
dc.identifier.orcid | https://orcid.org/0000-0001-7381-947X | - |
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